From a38a34f88884c62b4077a34e468965f9b18e9b1b Mon Sep 17 00:00:00 2001
From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Thu, 18 Feb 2021 11:23:30 +0100
Subject: [PATCH] macro: add swap helper

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
 src/lxc/macro.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/lxc/macro.h b/src/lxc/macro.h
index 9e74078f4..f6ac8c45f 100644
--- a/src/lxc/macro.h
+++ b/src/lxc/macro.h
@@ -694,4 +694,11 @@ enum {
 
 #define MAX_FILENO ~0U
 
+#define swap(a, b)                     \
+	do {                           \
+		typeof(a) __tmp = (a); \
+		(a) = (b);             \
+		(b) = __tmp;           \
+	} while (0)
+
 #endif /* __LXC_MACRO_H */
-- 
2.47.2